This can mean in German "jewelerie" but in English it can be slang for "old and boring person" or "very intolerant person". Basically anyone who says no to a lot of things can be called a "schmuck". This is not a compliment or a thing to say when you are trying to be polite.
Examples:
Me: hey teacher, may I borrow a ruler
Teacher: no.
Me: may I borrow a ruler from my friend?
Teacher: no.
Me: than from who will I borrow a ruler?
Teacher: no one.
Me: wow, you're such an old schmuck.
Examples:
Me: hey teacher, may I borrow a ruler
Teacher: no.
Me: may I borrow a ruler from my friend?
Teacher: no.
Me: than from who will I borrow a ruler?
Teacher: no one.
Me: wow, you're such an old schmuck.
by Dizygoggles424 December 22, 2018
Get the Schmuckmug. 
You,its you
by Fadedstalkz April 7, 2022
Get the Schmuckmug. Your a schmuck you bastard
by Abdinasirthefazekid November 6, 2019
Get the Schmuckmug. origin: 12th century england.
The person tasked with writing all formal correspondence on behalf of the prince royal to his loyal subjects. (also the peasants)
The person tasked with writing all formal correspondence on behalf of the prince royal to his loyal subjects. (also the peasants)
by Anthinda Droulas September 5, 2017
Get the Schmuckmug. 
N. a foolish/ contemptible person and or complete fucking werido that send pictures of his jizz on their chest.
by Hunter.smitty June 9, 2022
Get the Schmuckmug.